/*  Starshatter OpenSource Distribution
    Copyright (c) 1997-2004, Destroyer Studios LLC.
    All Rights Reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name "Destroyer Studios" nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    SUBSYSTEM:    Stars.exe
    FILE:         NetLobby.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Base Class for Multiplayer Game Lobby classes
*/

#include "MemDebug.h"
#include "NetLobby.h"
#include "NetLobbyClient.h"
#include "NetLobbyServer.h"
#include "NetClientConfig.h"
#include "NetServerConfig.h"
#include "NetChat.h"
#include "NetUser.h"

#include "NetMsg.h"
#include "NetData.h"
#include "NetLayer.h"

#include "Player.h"
#include "Ship.h"
#include "ShipDesign.h"
#include "Campaign.h"
#include "Element.h"
#include "Mission.h"

#include "NetHost.h"
#include "Game.h"
#include "Light.h"
#include "parseutil.h"

// +--------------------------------------------------------------------+

const int MAX_NET_FPS   = 50;
const int MIN_NET_FRAME = 1000 / MAX_NET_FPS;

const DWORD SHIP_ID_START = 0x0010;
const DWORD SHOT_ID_START = 0x0400;

static NetLobby* instance = 0;

static DWORD   ship_id_key = SHIP_ID_START;
static DWORD   shot_id_key = SHOT_ID_START;

// +--------------------------------------------------------------------+

NetLobby::NetLobby(bool temporary)
: link(0), local_user(0), last_send_time(0), active(true),
selected_mission(0), mission(0), status(0)
{
    if (!temporary)
    instance   = this;
}

NetLobby::~NetLobby()
{
    if (instance == this)
    instance = 0;

    unit_map.destroy();
    users.destroy();
    campaigns.destroy();
    chat_log.destroy();

    if (local_user) {
        delete local_user;
        local_user = 0;
    }

    if (link) {
        delete link;
        link = 0;
    }

    mission = 0;
}

// +--------------------------------------------------------------------+

NetLobby*
NetLobby::GetInstance()
{
    return instance;
}

// +--------------------------------------------------------------------+

void
NetLobby::ExecFrame()
{
    Send();
    Recv();
}

void
NetLobby::Recv()
{
    NetMsg* msg = link->GetMessage();

    while (msg) {
        if (active) {
            NetPeer* peer = link->FindPeer(msg->NetID());

            static char buffer[256];
            char*       text = 0;

            if (msg->Length() > 2) {
                if (msg->Length() < 250) {
                    ZeroMemory(buffer, sizeof(buffer));
                    CopyMemory(buffer, msg->Data()+2, msg->Length()-2);
                    text = buffer;
                }
                else if (msg->Length() < 1024 * 1024) {
                    text = new(__FILE__,__LINE__) char[msg->Length()];
                    ZeroMemory(text, msg->Length());
                    CopyMemory(text, msg->Data()+2, msg->Length()-2);
                }
            }

            switch (msg->Type()) {
            case NET_LOBBY_PING:             DoPing(peer, text);           break;
            case NET_LOBBY_SERVER_INFO:      DoServerInfo(peer, text);     break;
            case NET_LOBBY_SERVER_MODS:      DoServerMods(peer, text);     break;
            case NET_LOBBY_LOGIN:            DoLogin(peer, text);          break;
            case NET_LOBBY_LOGOUT:           DoLogout(peer, text);         break;

            case NET_LOBBY_AUTH_USER:        DoAuthUser(peer, text);       break;
            case NET_LOBBY_USER_AUTH:        DoUserAuth(peer, text);       break;

            case NET_LOBBY_CHAT:             DoChat(peer, text);           break;
            case NET_LOBBY_USER_LIST:        DoUserList(peer, text);       break;
            case NET_LOBBY_BAN_USER:         DoBanUser(peer, text);        break;
            case NET_LOBBY_MISSION_LIST:     DoMissionList(peer, text);    break;
            case NET_LOBBY_MISSION_SELECT:   DoMissionSelect(peer, text);  break;
            case NET_LOBBY_MISSION_DATA:     DoMissionData(peer, text);    break;
            case NET_LOBBY_UNIT_LIST:        DoUnitList(peer, text);       break;
            case NET_LOBBY_MAP_UNIT:         DoMapUnit(peer, text);        break;
            case NET_LOBBY_GAME_START:       DoGameStart(peer, text);      break;
            case NET_LOBBY_GAME_STOP:        DoGameStop(peer, text);       break;
            case NET_LOBBY_EXIT:             DoExit(peer, text);           break;
            }

            if (text && text != buffer)
            delete [] text;
        }

        delete msg;
        msg = link->GetMessage();
    }
}

// +--------------------------------------------------------------------+

void
NetLobby::Send()
{
}

// +-------------------------------------------------------------------+

DWORD
NetLobby::GetLag()
{
    if (link)
    return link->GetLag();

    return 0;
}

// +-------------------------------------------------------------------+

void
NetLobby::SetLocalUser(NetUser* user)
{
    if (user != local_user) {
        if (local_user) {
            delete local_user;
            local_user = 0;
        }

        if (user) {
            local_user = user;
            local_user->SetHost(true);
        }
    }
}

void
NetLobby::BanUser(NetUser* user)
{
}

void
NetLobby::AddUser(NetUser* user)
{
    if (user) {
        if (user != local_user && !users.contains(user)) {
            users.append(user);
            Print("NetLobby User Logged In  - name: '%s' id: %d host: %d\n",
            user->Name().data(),
            user->GetNetID(),
            user->IsHost());
        }
    }
}

void
NetLobby::DelUser(NetUser* user)
{
    if (user) {
        if (user == local_user)
        local_user = 0;

        else
        users.remove(user);

        UnmapUnit(user->Name());

        Print("NetLobby User Logged Out - name: '%s' id: %d host: %d\n",
        user->Name().data(),
        user->GetNetID(),
        user->IsHost());

        user->SetHost(false);
        delete user;
    }
}

int
NetLobby::NumUsers()
{
    int num = 0;

    if (local_user)
    num = 1;

    num += users.size();

    return num;
}

NetUser*
NetLobby::GetHost()
{
    for (int i = 0; i < users.size(); i++) {
        NetUser* u = users[i];

        if (u->IsHost())
        return u;
    }

    return 0;
}

bool
NetLobby::HasHost()
{
    bool host = false;

    if (local_user && local_user->IsHost())
    host = true;

    for (int i = 0; i < users.size() && !host; i++) {
        if (users[i]->IsHost())
        host = true;
    }

    if (status > NetServerInfo::LOBBY)
    host = true;

    return host;
}

bool
NetLobby::SetUserHost(NetUser* user, bool host)
{
    bool ok = false;

    if (user && users.contains(user)) {
        if (host && !HasHost()) {
            user->SetHost(true);
            ok = true;
        }
        else if (!host) {
            user->SetHost(false);
            ok = true;
        }
    }

    return ok;
}

NetUser*
NetLobby::GetLocalUser()
{
    return local_user;
}

List<NetUser>&
NetLobby::GetUsers()
{
    return users;
}

List<ModInfo>&
NetLobby::GetServerMods()
{
    return server_mods;
}

NetUser*
NetLobby::FindUserByAddr(const NetAddr& addr)
{
    for (int i = 0; i < users.size(); i++) {
        NetUser* u = users[i];
        if (u->GetAddress().IPAddr() == addr.IPAddr())
        return u;
    }

    return 0;
}

NetUser*
NetLobby::FindUserByName(const char* name)
{
    if (local_user && !_stricmp(local_user->Name(), name))
    return local_user;

    for (int i = 0; i < users.size(); i++) {
        NetUser* u = users[i];
        if (!_stricmp(u->Name(), name))
        return u;
    }

    return 0;
}

NetUser*
NetLobby::FindUserByNetID(DWORD id)
{
    for (int i = 0; i < users.size(); i++) {
        NetUser* u = users[i];
        if (u->GetNetID() == id)
        return u;
    }

    return 0;
}

// +--------------------------------------------------------------------+

void
NetLobby::ParseMsg(Text msg, List<NetLobbyParam>& params)
{
    params.destroy();

    BlockReader reader(msg.data(), msg.length());
    Scanner     lexer(&reader);

    Token name  = lexer.Get();

    while (name.type() == Token::AlphaIdent) {
        Token value = lexer.Get();
        if (value.type() != Token::EOT) {
            Text val = value.symbol();

            if (val[0] == '"' && val[val.length()-1] == '"') {
                val = val.substring(1, val.length()-2);
            }

            NetLobbyParam* param = new(__FILE__,__LINE__) NetLobbyParam(name.symbol(), val);
            params.append(param);

            name = lexer.Get();
        }

        else {
            name = Token(Token::EOT);
        }
    }
}

// +--------------------------------------------------------------------+

bool
NetLobby::Ping()
{
    Sleep(500);
    return false;
}

// +-------------------------------------------------------------------+

void
NetLobby::AddChat(NetUser* user, const char* msg, bool route)
{
    if (user && msg && *msg)
    chat_log.append(new(__FILE__,__LINE__) NetChatEntry(user, msg));
}

List<NetChatEntry>&
NetLobby::GetChat()
{
    return chat_log;
}

void
NetLobby::ClearChat()
{
    chat_log.destroy();
}

// +-------------------------------------------------------------------+

List<NetCampaignInfo>&
NetLobby::GetCampaigns()
{
    return campaigns;
}

// +-------------------------------------------------------------------+

void
NetLobby::AddUnitMap(MissionElement* elem, int index)
{
    if (elem)
    unit_map.append(new(__FILE__,__LINE__) NetUnitEntry(elem, index));
}

List<NetUnitEntry>&
NetLobby::GetUnitMap()
{
    return unit_map;
}

void
NetLobby::ClearUnitMap()
{
    unit_map.destroy();
}

void
NetLobby::MapUnit(int n, const char* user, bool lock)
{
    if (n >= 0 && n < unit_map.size()) {
        NetUnitEntry* unit = unit_map[n];

        if (!lock && unit->GetLocked())
        return;

        if (user && *user) {
            for (int i = 0; i < unit_map.size(); i++) {
                NetUnitEntry* u = unit_map[i];
                if (u->GetUserName() == user) {
                    if (!lock && u->GetLocked()) return;
                    u->SetUserName("");
                }
            }
        }

        unit->SetUserName(user);
        unit->SetLock(lock);
    }
}

void
NetLobby::UnmapUnit(const char* user)
{
    if (user && *user) {
        for (int i = 0; i < unit_map.size(); i++) {
            NetUnitEntry* u = unit_map[i];
            if (u->GetUserName() == user) {
                u->SetUserName("");
                u->SetLock(false);
                return;
            }
        }
    }
}

bool
NetLobby::IsMapped(const char* user)
{
    if (user && *user) {
        for (int i = 0; i < unit_map.size(); i++) {
            NetUnitEntry* u = unit_map[i];
            if (u->GetUserName() == user) {
                return true;
            }
        }
    }

    return false;
}

// +--------------------------------------------------------------------+

void
NetLobby::SelectMission(DWORD id)
{
    if (selected_mission != id) {
        selected_mission = id;
        ClearUnitMap();

        int         mission_id  = selected_mission;
        int         campaign_id = -1;
        Campaign*   campaign    = 0;
        mission     = 0;

        campaign_id = mission_id >> NET_CAMPAIGN_SHIFT;
        mission_id  = mission_id &  NET_MISSION_MASK;

        ListIter<Campaign> c_iter = Campaign::GetAllCampaigns();
        while (++c_iter) {
            campaign = c_iter.value();

            if (campaign->GetCampaignId() == campaign_id) {
                mission = campaign->GetMission(mission_id);
                break;
            }
        }

        if (campaign && mission) {
            Campaign::SelectCampaign(campaign->Name());
            campaign->SetMissionId(mission_id);

            ListIter<MissionElement> iter = mission->GetElements();
            while (++iter) {
                MissionElement* elem = iter.value();

                if (elem->IsPlayable()) {
                    if (elem->Count() == 1) {
                        AddUnitMap(elem);
                    }
                    else {
                        for (int i = 0; i < elem->Count(); i++)
                        AddUnitMap(elem, i+1);
                    }
                }
            }
        }

        else {
            selected_mission = 0;
            mission          = 0;
        }
    }
}

// +--------------------------------------------------------------------+

bool
NetLobby::IsNetLobbyClient()
{
    if (instance)
    return instance->IsClient();
    return false;
}

bool
NetLobby::IsNetLobbyServer()
{
    if (instance)
    return instance->IsServer();
    return false;
}

// +-------------------------------------------------------------------+
// +-------------------------------------------------------------------+
// +-------------------------------------------------------------------+

NetUnitEntry::NetUnitEntry(MissionElement* e, int n)
: index(n), lock(false), lives(1), hull(100), role(0)
{
    if (e) {
        elem  = e->Name();
        iff   = e->GetIFF();

        if (e->GetDesign())
        design = e->GetDesign()->name;
    }
}

NetUnitEntry::NetUnitEntry(const char* e, const char* d, int i, int n)
: elem(e), design(d), iff(i), index(n), lock(false), lives(1),
hull(100), role(0)
{ }

NetUnitEntry::~NetUnitEntry()
{ }

Text
NetUnitEntry::GetDescription() const
{
    if (elem) {
        static char buffer[1024];

        sprintf_s(buffer, "name \"%s\" index %d design \"%s\" iff %d user \"%s\" lives %d hull %d role %d lock %d ",
        elem.data(),
        index,
        design.data(),
        iff,
        user.data(),
        lives,
        hull,
        role,
        lock);

        return buffer;
    }

    return "name \"Not Found\" ";
}

// +--------------------------------------------------------------------+
// +--------------------------------------------------------------------+
// +--------------------------------------------------------------------+

NetServerInfo::NetServerInfo()
: nplayers(0), hosted(0), status(0), port(0), gameport(0), save(false), ping_time(0)
{ }

